How to deal with color balance. (Ever take a picture of your aquarium and everything is horribly PURPLE/BLUE?)

How to take macro shots. (To show all the closeups of folds and tentacles of your corals)

How to take pictures of fast moving fish.

How to frame/control picture composition.

How to post-process pictures.

We could bring/setup a temporary aquarium for live demonstration / hands on learning.

I can take a decent clear shot of my corals/tank inhabitants but I know for a fact that some of BAR's members are professional photographers. So we could have a mix of amateur and professional photographers teaching this workshop.

If we only have 10 people or less interested, this ain't gonna go.
If we see a lot of interest, we might be able to schedule an impromptu workshop into our events schedule.

But macrolens cannot be a part of the equipment list. Mainly because macrolenses are specific to the camera. A canon macro lens does not work on a nikon camera or olympus camera or sony camera. Too many lenses and cameras out there.

BAR is not going to buy 4 macro lenses and 4 different sets of extension tubes to accomodate for everyones different cameras.

Sorry @Prisonfood53 but this workshop would not be able to turn your two polyp frags into 50 polyp colonies

Might be possible to pick up an older manual focus Nikon macro lens for that price (e.g. Nikon 55mm f/3.5 micro). It doesn't go to 1:1, but should be more than sufficient for general macro uses since you won't be at 1:1 a number of times when shooting macro. Otherwise, just pick up a reversing ring and flip any 50mm lens.